tatum



(No Model.)

s. 0. TATUM.

PATTERN AND FLASK FOR PRODUCING GASTINGSf No. 282,403. Patented July.31, 1883.

N, PETERS. Phom-umo n mr, wumngmn. D (L UNITED if STATES PATENT OFICE...

SAMUEL QTATUM, or cinomnnrr, OHIO, ASSIGNOR To SAMUEL c. TATUM a 00., orSAME PLACE.

PATTERN AND FLASK""FORPRODUClNG CASTlNG S.

SPECIFICATION forming partof Letters Patent No. 282,403, dated July 31,1883.

Application filedApi-il 21, 1883. NJ model.) i

To all whom it may coitcern;

Be it known that I, SAMUEL O..TATUM,\L citizen of the United States, anda resident of Cincinnati, in the county of Hamilton and 5 State of Ohio,have invented certain new and;

- useful Improvements in Patterns and Flasks for Producing Castings, ofwhich the following is a specification. y a

My inventionrelates to improvements in IO patterns for producingcastings and the mode of using the same.

The objects of my invention are, first, to

provide means for removing the patternfrom l the sand without injuryingthe print or the 1 5 mold in the sand second, to provide'a firm bear ingupon the flask upon which the weight of the pattern is supported,andupon which the pattern hinges in drawing the same from the sand.

2O The various features of my invention will be fully set forth in thefollowing description of the accompanying drawings, in which Figure 1 isaplanview of my improvement, representing the pattern in "position inthe 2 5 sand. Fig. 2 is a seotion' on linex 00, Fig. 1. Fig. 3represents a modified form of my im provement, in which the ledge O isprovided with perforated ears or lugs, and the arms D of the pattern arepierced with holes, through 0 which are passed the rod or wire f, thusforming a hinge. y

A represents the flask; B, the pattern; 0, a rib or ledge secured to theinside of the flask, and upon which the pattern hinges and issup- 35ported as it is drawn from'the sand.

0 represents an upwardly-projecting flange on ledge C,against which lugsor arms D of the pattern abut, and which prevents any lat eral andlongitudinal movement of pattern 13 40 as it is drawn.

1701 the pattern B by cross-pieces E. Parts E. e 6 form the gates forpouring in the melted metal.

The ledge G is firmly secured upon the inner 4 side of the flask, and inoperation, when the [pattern is placed in position after the sand hasbeen prepared for its reception, the lugs D are placed upon said ledge Cand flange c. tAfter the sand is properly packed the pattern 5 is liftedby means of lifting pin or lu E turning or hinging on ledge O. Thismanner of lifting ordrawing the pattern from the sand is veryadvantageous, as the pattern is lifted bodily and almost vertically fromthe sand. 5 The solid bearing afforded by ledge O secures a steadyupward movement of the pattern and prevents any shaking or lateralmovement of thesame, due to any unsteadiness of the operator, whichwould mar the edges and surfaces 6( of the mold or print.

lhe method of hinging the pattern upon the flask is found in practice tobe much more reliable than if it were turned in the sand or lifted inthe usual manner.

I claim-- i 1. The combination of a pattern for producing castings,having the lugs or arms D,

with the flask having a fulcrum upon which the pattern rotates inlifting or drc wing it 7c from the sand, substantially as herein setforth.

2. The combination of a pattern for producing castings, having the lugor arm D, with i the flask provided with the ledge or rib C having theflange c, substantially as and for the 75 purpose described.

In testimony whereof I have hereunto set my hand. i V i SAMUEL 0. TATUM.Vitnesses: V

LOUIS W. Boson,

E represents a: lifting pin or lug connected ANDREW E. Scorr.

